# 簡單日曆 vs aiwan 3+3 Postal Code

The clearest difference is update cadence: 簡單日曆 at every 5 weeks against aiwan 3+3 Postal Code's every 37 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

簡單日曆 ships an update every 5 weeks, aiwan 3+3 Postal Code every 37 months. The most recent releases landed on July 26, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | 簡單日曆 | aiwan 3+3 Postal Code |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1451896626/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 5 weeks** | Every 37 months |
| Size | 13 MB | 28 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yihang Huang](https://appshunter.io/developer/1451896625) | [Chengchung Chiu](https://appshunter.io/developer/1359094944) |

## What reviewers say

### 簡單日曆

[App page](https://appshunter.io/ios/app/id1451896626)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### aiwan 3+3 Postal Code

[App page](https://appshunter.io/ios/app/aiwan-3-plus-3-postal-code/id1524433635)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 簡單日曆 free?

簡單日曆 is free to download, with no in-app purchases.

### Is aiwan 3+3 Postal Code free?

aiwan 3+3 Postal Code is free to download, with no in-app purchases.

### Do 簡單日曆 or aiwan 3+3 Postal Code have ads?

Both 簡單日曆 and aiwan 3+3 Postal Code show ads.

### Which is updated more often, 簡單日曆 or aiwan 3+3 Postal Code?

簡單日曆 ships an update every 5 weeks, and aiwan 3+3 Postal Code every 37 months. Most recently, 簡單日曆 was updated on July 26, 2026 and aiwan 3+3 Postal Code on September 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*